The Andes A Guide For Climbers, John Biggar 1999 Mountaineering

Aconcagua - Wikipedia

Peru-Bolivia eAAJ 2000-2011 (rfs-copy) by John Harlin Media - DO - Issuu

A highly praised and comprehensive mountaineering guide to the peaks of the Andes for alpinists and ski mountaineers. All 100 major peaks over 6000m

The Andes - A Guide for Climbers and Skiers

Alpinist Newswires

Sierranevada2000

Andes Website - Who we are, trek and expedition leaders

Ascension of the Llullaillaco Volcano 6752 meters – Argentina.

Alpinist Newswires

A highly praised and comprehensive mountaineering guide to the peaks of the Andes for alpinists and ski mountaineers. All 100 major peaks over 6000m

The Andes - A Guide for Climbers and Skiers

Yerupaja Peru Guide: Tours, Hiking, Maps, Facts and History - Evolution Treks Peru

Andes Website - information file on trekking and climbing in Ecuador

Maparaju : Climbing, Hiking & Mountaineering : SummitPost